Improvement in lime-kilns



.B. BURYEUN.

Lime-Wins.

N0. 134,42]. Patented Dec.3l,1872.

AM. PHOTD-LITHUGRAPHIG COJV. K IOSBOHNE S PROCESS.)

JOHN GORYEON, OF BAY CITY, MICHIGAN.

IMPROVEMENT IN LllVlE-KILNS.

Specification forming part of Letters Patent No. 113%421, dated December31, 1872.

To all whom it may concern:

Be it known that I, JOHN GORYEON, of Bay City, in the county of Bay andState of Michigan, have invented a new and useful Improvement inPerpetual Lime-Biirning Kilns; and I do declare that the following is atrue and accurate description thereof, reference being had to theaccompanying drawing and to the letters of reference marked thereon andbeing a part of this specification, in which- Figure 1 is a perspective,and Fig. 2 a vertical section, of my kiln.

Like letters indicate like parts in each figure.

The nature of this invention relates to an improvement in theconstruction of what are usually termed perpetual lime-kilns, soarranged as to economise both labor and fuel in the manufacture of lime.The invention consists in the peculiar construction and arrangement ofthe various parts, as more fully hereinafter described.

In the accompanying drawing, A represents the body of the kiln,constructed of masonry or otherwise, as is most convenient. B is ametallic flue, extending from the lime pit O upward through the centerof the body of the kiln and a short distance above the top thereof.Within this flue, and so as to leave a space between it and the lining,is a lining of brick, D, and the space between said lining and flue isfilled with leached ashes, preferably, although sand may be employed. Ifind the former to be the best non-conductor to preserve the metallicflue from the action of the heat. E are fire-boxes, provided with afloor or grate, a, and extending through the body of the kiln tocorresponding openings b in' the metallic flue and lining. These fireboxes or chambers are provided with suitable doors F through which thefire is fed. G are ash-pits, provided with draft-doors H. The rear wallI of these ash-pits is built with an incline, as shown, to increase thedraft at thepoint where the fire-boxes communicate with the flue. Careshould be taken when feeding the fire thatthe draft-doors H should beopened. J is a rake or suitable implement for removing the lime from thepit 0 through the opening K in the base of the body of the lime-kiln.

The stone to be converted into lime is thrown into the top of the flue,and the fires made in the fire-boxes, whose connections with the flueare opposite each other. As the stone is converted it falls into thelime-pit. As it falls the stone above the fire-boxes and in the fluefrequently becomes choked by forming an arch. To break this and compelthe unburned stone to present itself to the action of the tire anopening, L, is made through the wall of the kiln and flue, through whicha poker or rod may be inserted for the purpose.

What I claim as my invention, and desire to secure by Letters Patent,is-- 1. In ash-pits in lime-kilns, the inclined back wall I, for thepurposes specified.

2. The arrangement of the body A, flue B, lining D, fire-boxes E,ash'pits Gr, lime-pit G, and opening L, when each part is constructed tooperate substantially as described.

, JOHN OORYEON.

\Vitn esses EDWARD JOHNSTON, Tnos. S. SPRAGUE.

